Locomotive-grate



(No Model.)

` C. KNAGGS.

LOGOMOTIVB GRATB. y No. 374.839. Patented Deo. 135, 1887.

N. PETERS, Pimm-lithograph, wnshinglan, D. t;

' UNITED STATES PATENT Error;o

YCHRISTOPHER KNAGGS, OF DETROIT, MICHIGAN.

LOCOIVIOTIVEFGRATE.

SPECIFICATION forming part of Letters Patent No. 374,839, dated December13, 1887.

Application tiled'J une 10,1861. Serial No. 240,904. (No model.)'Patented in Canada August 17, i887, No. 27,460.

T0 all whom itl may concern:

Be it known that l,`CHRrsToPHER KNAcGs, of Detroit, in the county ofWayne and State of Michigan, have invented'new and useful Improvementsin Locomotive-Grates, (for which I h ave obtained Letters PatentinCanada, dated August 17, 1887, No. 27,4605) and I do hereby declare thatthe following isa full, clear, and eX- act description thereof,reference being had to the accompanying drawings,which form apart ofthis specification.

y My invention relates to certain new and use ful improvements inlire-boxes and ash-pans for locomotive-engines; and the inventionconsists in dividing the grate in two parts, with the means for turningthe gratebars of each section independently of the other and in oppositedirections, and in the different means for securing the grate-bars intheir places; also,in providing means for wetting the ashes in theash-pan and thawing out the pan in winter, al1 as more fully hereinafterdescribed and shown.

In the accompanying drawings,which form a part of this specification,Figure 1 is a 1ongitudinal section showing the grates closed. Fig. 2 isa sectional View showing the grates opened. Fig. 3 is a cross-sectionthrough the center of the grate-bar. Fig. 4 is a sectional detailshowing the pivot of the lower grate. Fig. 5 is an end elevation of theupper gratebar.

In the drawings like letters indicate like parts. v

A is the body of the fire-box, and A the ash-pan, provided with theflange a, to which the bracket B is attached by the bolt or screw b, thebrackets B being in sufcient number to support the bars C C, to whichthe grate-bars are pivoted. The pivots c c project from the bars C C,and those on one bar enter a socket, d, in the end of the grate-bar D.The gratebar D is provided at the opposite end with the arm D', in theouter face of which'the groove d is formed, the' upper end of the grooved being the same distance as the top of the socket d from the uppersurface of the grate-bar. The pivot c' enters the groove d', and when ithas reached the upper end of said groove the pin d is inserted throughholes in the arm just below the pivot c -to retain the grate-bar inplace. This peculiar constructionof the gratebarsin the {ire-box'enables me to remove any ofthe grate-bars separately. The grate-bar D isalso provided with the curved arm E, to which is attached the bar F. Thebar F `is attached by the link f to the lever G, by means of which thereman turns the gratebars when cleaning the grat-e. 'The curved arms Eof the forward section of the gratel in- 6o cline inwardly,while thearms of the rear section incline in the opposite direction, so that thegrate-barsall turn up toward the center,l whereby the coal at the endshas the whole distance between the grate-bars `D to clear throughinstead of the halt distance, which would be at one endif they allturned one Way. By this construction and arrangement of the grate-barsof thelire-box the fireman in raking. his tire can push the live coalson one section 7o and empty the ashes from the other. He can then rakethe coals onto thesectionyust cleaned, and then empty the section fromwhich such coals were last taken, thus saving his fire and avoiding thenecessity of rebuildingV and rekindling a new one.

To the lower inside edge of the ash-pan the bars H H are firmlyfastened. At proper intervals holes are drilled through the shell of theash-pan and the bars H H, through 8o which the pivot-pins K K pass. Thegratebars I I are pivoted on the pins K K. These pivot-pins are providedwith a cylindrical head, 7c, and extend through the bars H H and 4 theshell of the ash-pan, and are secured by a 85 screw-nut on the outerend. The grate-bars I I have a projection, z', on the under side, inwhich a socket, i', is formed to receive the head of thepivot-pin K, sothat any grate-bar may be removed independently of the others. 9o Thegrate-bars I I are provided on their up`A per sides with the arm L, towhich is pivoted the rod M. This rod M is connected by the link m to thelever N, which is operated by the fireman.

Theash-pan isfprovided with apipe, O,which connects by proper pipes withthe boiler above and below the water-line to admit either steam or hotwater to the pipe O, as desired. rThe pipe O is laid around three sidesof the ashloc pan, and is provided with the orifices o,for the purposeof showering the ashes in the pan with wateror to admit steam for thepurpose of What I claim as my invention isthawing out the ash pan when`frozen in The oombination,with the grate-barl, formed Winter. withdownwardly projecting lug` i, having By the use of the water-pipe I keepthe ashes socket i, ofthe bar H and the removable pivot- I 5 Wet,thereby causing them to remain in the piu K, provided with cylindricalhead k and ash-pan instead of floating upward and being nut,substantially as described. deposited on other parts of the en orine,asis the ease with ash-pans as ordinarilyonstructed. CHRIS' KNAGGS' Thenecessity for using steam to thaw out the ash-pan in winter is too wellknown to need further explanation.

Witnesses:

JOHN SCHUMAN, EDMoND J. SoULLY.

